Having lost the Battle of San Salvador the previous year, the Dutch amassed a more considerable force to drive the Spanish out of Formosa.

The Spanish, meanwhile, having lost the trust of the aboriginals during the previous battle, were low in morale and dispatched a letter to Manila to request reinforcements, but Governor-General Corcuera sent only two small vessels carrying twelve sailors and twenty soldiers, further lowering the morale of Spanish stationed in the fort.

Twelve Spanish soldiers, eight Pampangans, and thirty or forty aboriginal archers inflicted heavy damage on the landing soldiers, as "our men fired their guns at a crowd, and some used three balls at one shot; and the Indian bowmen, who were very skillful, also inflicted much damage on the Dutch, all the more as they came boldly on."

Another wrote that the Dutch fired their guns "so incessantly that it seemed to be the Judgment Day; and they gave no respite to our men, who were few in number and worn out with fatigue."

Having captured the redoubt, the Dutch aimed their cannon against the main fortress below and then sent a messenger with a white flag and a letter in Latin demanding surrender.

The Dutch victory cemented their status as a rising power in Southeast Asia and curtailed further Spanish expansion.

The Spanish governor, who had surrendered to the Dutch, was afraid he would be held responsible and refused to return to Manila.

In 1644 Diego Fajardo Chacón, his successor as governor-general had him locked up to stand trial for the loss of Formosa.